A cranial orthosis may be used to re-shape a child's cranium. The cranial orthosis includes an inner layer and a resistance piece. The inner layer is made of silicone and grips the patient's head such that the inner layer does not move once it is positioned on the child's head. The resistance piece encircles the inner layer and is made of plastic. The resistance piece may not contact the patient's head. The resistance piece is attached to the inner layer. The resistance piece provides the necessary resistance that shapes the patient's head into the desired shape. An attachment feature may be added to the inner layer. The attachment feature engages openings on the resistance piece to connect the resistance piece to the inner layer. The resistance piece may also include one or more areas of increased width that provide additional support to the patient's head.